openkylin
/
platform_build_soong
mirror of https://gitee.com/openkylin/platform_build_soong.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

Remove .rustc ELF section from mini-debug-info. 

The section is stripped from binaries (but preserved in /symbols).

However, is it also unintentionally copied into the minidebuginfo
compressed section, which is included in the final shipped binary.
(This does not affect symtab symbols, which are handled as usual)

Removing it from mini-debug-info shrinks some rust binaries by
up to 10x, saving >10MB on the system partition overall (AOSP).

Test: extract minidebuginfo and check it manually with readelf
Change-Id: I462d81455626bb2b5244e1bf3d5f8b71646f3401
This commit is contained in:
David Srbecky 2021-03-20 12:47:38 +00:00
parent f2be52c4dc
commit b474fc0ad6
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
scripts/strip.sh
View File

@ -87,7 +87,7 @@ do_strip_keep_mini_debug_info() {
comm -13 "${outfile}.dynsyms" "${outfile}.funcsyms" > "${outfile}.keep_symbols"
echo >> "${outfile}.keep_symbols" # Ensure that the keep_symbols file is not empty.
"${CROSS_COMPILE}objcopy" --rename-section .debug_frame=saved_debug_frame "${outfile}.debug" "${outfile}.mini_debuginfo"
"${CROSS_COMPILE}objcopy" -S --remove-section .gdb_index --remove-section .comment --keep-symbols="${outfile}.keep_symbols" "${outfile}.mini_debuginfo"
"${CROSS_COMPILE}objcopy" -S --remove-section .gdb_index --remove-section .comment --remove-section .rustc --keep-symbols="${outfile}.keep_symbols" "${outfile}.mini_debuginfo"
"${CROSS_COMPILE}objcopy" --rename-section saved_debug_frame=.debug_frame "${outfile}.mini_debuginfo"
"${XZ}" --block-size=64k --threads=0 "${outfile}.mini_debuginfo"